When asked about the possibility of Unreal Engine 4 support for Wii U during a recent Q&A session, Epic's Mark Rein seemingly laughed at the question - as did the entire room of journalists. But on Twitter, Rein said that he wasn't laughing at the system. Rather, he thought it was silly how the original question didn't include the PlayStation 3 or Xbox 360 as well.

@izaki_one I wasn’t laughing at Nintendo or WiiU. I was laughing at how the question only included WiiU and not 360 or PS3.— Mark Rein (@MarkRein) March 30, 2013

@geeheeb666 well that was certainly not my intent and I feel sorry for being caught off guard by the question and the dumb way I answered it— Mark Rein (@MarkRein) March 30, 2013

I don't think he completely understands why he got backlash in the first place. He pointed out that he laughed because they asked specifically about Wii U, instead of all "current gen" console support.
Its been said a thousand times already that a generation is not defined by specs. It was a reasonable question to ask because, technically, the Wii U is Nintendo's next generation system.